The 15th annual Shanghai International Automobile Industry Exhibition opened to the public Sunday and runs through April 29. China is the world’s biggest automobile market, and although growth has slowed from its blistering pace of recent years, the country is a key battleground for an industry that has stuttered in the United States and Europe.

April 21, 2013 A security guard stands in front of a Volkswagen Cross Blue Coupe displayed at the Shanghai International Automobile Industry Exhibition in Shanghai.Eugene Hoshiko/AP

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